Module 14 - Network Automation

Which action takes place in the assurance element of the IBN model?

• translation of policies

• verification and corrective action

• integrity checks

• configuring systems

Answer explanation

The assurance element of the IBN model is concerned with end-to-end verification of network-wide behavior.

Refer to the exhibit. Which data format is used to represent the data for network automation applications?

• XML

• JSON

• YAML

• HTML

Answer explanation

The common data formats that are used in many applications including network automation and programmability are as follows: JavaScript Object Notation (JSON) - In JSON, the data known as an object is one or more key/value pairs enclosed in braces { }. Keys must be strings within double quotation marks " ". Keys and values are separated by a colon.eXtensible Markup Language (XML) - In XML, the data is enclosed within a related set of tags <tag>data</tag>.YAML Ain’t Markup Language (YAML) - In YAML, the data known as an object is one or more key value pairs. Key value pairs are separated by a colon without the use of quotation marks. YAML uses indentation to define its structure, without the use of brackets or commas.

What is the function of the key contained in most RESTful APIs?

• It is the top-level object of the API query.

• It is used to authenticate the requesting source.

• It represents the main query components in the API request.

• It is used in the encryption of the message by an API request.

Answer explanation

Many RESTful APIs, including public APIs, require a key. The key is used to identify the source of the request through authentication.

Which two configuration management tools are developed using Ruby? (Choose two.)

• Chef

• Ansible

• Puppet

• SaltStack

• RESTCONF

Answer explanation

Chef and Puppet are configuration management tools developed using Ruby. Ansible and SaltStack are configuration management tools developed using Python. Ruby is typically considered a more difficult language to learn than Python. RESTCONF is a network management protocol.

Which term is used to describe a set of instructions for execution by the configuration management tool Puppet?

• Pillar

• Manifest

• Playbook

• Cookbook

Answer explanation

The configuration management tool Puppet uses the name Manifest to describe the set of instructions to be executed.

Which term is used to describe a set of instructions for execution by the configuration management tool SaltStack?

• Pillar

• Manifest

• Playbook

• Cookbook

Answer explanation

The configuration management tool SaltStack uses the name Pillar to describe the set of instructions to be executed.

Which scenario describes the use of a public API?

• It can be used with no restrictions.

• It is used only within an organization.

• It requires a license.

• It is used between a company and its business partners.

Answer explanation

Public, or open, APIs have no restrictions and are available to the public. Some API providers do require a user to obtain a free key or token prior to using the API in order to control the volume of API requests received and processed.

In which situation would a partner API be appropriate?

• a vacation service site interacting with hotel databases to display information from all the hotels on its web site

• company sales staff accessing internal sales data from their mobile devices

• an internet search engine allowing developers to integrate the search engine into their own software applications

• someone creating an account on an external app or website by using his or her social media credentials

Answer explanation

Partner API programs incorporate collaboration with other business. They facilitate communication and integration of software between a company and its business partners.

What is YAML?

• It is a web application.

• It is a scripting language.

• It is a data format and superset of JSON.

• It is a compiled programming language.

Answer explanation

Like JSON, YAML Ain’t Markup Language (YAML) is a data format used by applications to store and transport data. YAML is considered a superset of JSON.

Which RESTFul operation corresponds to the HTTP GET method?

• read

• update

• patch

• post

Answer explanation

RESTful operations correspond to the following HTTP methods (shown to the left with the RESTful operation on the right):

POST > Create

GET > Read

PUT/PATCH > Update

DELETE > Delete